Hydro jetting is water doing the work of a scraper. A hose with a specialized nozzle goes down the line and pushes water out backward at high pressure. Those rearward jets pull the hose forward through the pipe while blasting the walls, so the buildup comes off the pipe and gets driven ahead of the flow toward the main instead of being left in place.

That difference from cabling is the entire point. A cable head cuts through what is blocking the line and restores flow, which is the right answer for most household clogs. But it leaves the coating on the pipe wall, and a pipe coated with hardened grease closes back up. Jetting takes the pipe back to its actual inside diameter, so there is nothing left for the next batch of grease to grab onto.

We use it where cabling keeps losing, restaurant and commercial kitchen lines, grease-loaded residential kitchen runs, lines with fine root hair through them, and any drain that has been cleared three times in a year. We do not jet everything. Old, thin, or already-compromised pipe can be damaged by that pressure, which is why we camera questionable lines before jetting them.

Grease is the main one, and it behaves the same in every kitchen. It goes down warm and liquid, hits the cooler horizontal run, and congeals onto the pipe wall. Each layer is rougher than the last, so the line catches material faster as it narrows. Hot water and soap move it a little further down the pipe, they do not remove it, which is why the clog keeps reappearing a few feet deeper each time.

Roots build up the opposite way, from the outside in. Fine hairs come through a joint, spread into a mesh across the pipe, and every solid passing by gets caught in it. Cabling cuts the mesh out and flow comes back immediately. Jetting strips the root hair back to the pipe wall much more thoroughly, though if roots are entering through a cracked joint the pipe still needs repair, which we would rather tell you than sell you a jetting schedule.

Along the coast, rental property lines take an unusual beating. Houses in Seagrove Beach, Grayton Beach, Inlet Beach, and WaterColor turn over weekly with guests who do not know or care what a disposal can handle, and the buildup accumulates far faster than a normal household. Owners who jet those lines between seasons deal with fewer mid-stay emergencies.